Alpha Layer?

Why doesn't the alpha layer display correctly in an OGL shape? A PNG used outside a canvas looks fine, but when inside a canvas the transparent pixels are visible. Any help is appreciated.

Robin Dunn wrote:

Alex Zeiger wrote:

Why doesn't the alpha layer display correctly in an OGL shape? A PNG used outside a canvas looks fine, but when inside a canvas the transparent pixels are visible. Any help is appreciated.

It (mostly) works for me. What is your platform and version?

Windows and 2.5.1.

Before I rescale, the transparent areas appear purple. After I rescale the bitmaps by converting them to an Image, the transparent areas appear completely white. Is there something extra I need to do to preserve the transparency?